Schematics A2141 820-01700 X970

shyamu

Active Member
VIP PRO
Nov 5, 2014
613
21
30
all working only macosx not installed is it working after paying u right
 

macabi170

Active Member
VIP PRO
Aug 30, 2016
113
1
35
the macbook was not turning on.

had a burnt mark on u8600 near it's corner

it wouldn't go from 5v to 20v

I applied 8v to ppbus_g3h, after that the Mac went from 5v to 20v

but u8600 was getting very hot, I took it out and tested it out this NAND has internal short to GND on PP1V8_SSD1. so bye bye DATA recovery.

did anyone here has fixed SSD problems on T2 MacBooks?
 

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20210806_084255.jpg 20210806_084235.jpg 20210806_084226.jpg 20210806_083857.jpg

dam1inc

Customer
VIP PRO
Feb 11, 2017
51
1
Los Angeles
I think I somehow damaged U4770 trying to use a modded CH341A to pull .bin, I've done it a few times already no problem and I don't see any damage but I kept gettting errors detecting the chip (MX25U3235F) and after hours of messing with progammer and software I checked the chip and pin 2 value is off, I wasn't able to read so my question is it possible to purchase a new chip and flash with new .bin?
 

ThienBui

Techniques
Supporter
Dec 13, 2013
166,260
11,305
vinafix.com
please clear me A2141 820-01700-A
This is not the first time I have mentioned this
All new model macbook using Apple T2 chip will not have BIOS it's like iphone
The 4mb file you see is just non-BIOS information.

and remember this don't let me repeat
 

ThienBui

Techniques
Supporter
Dec 13, 2013
166,260
11,305
vinafix.com
This is not the first time I have mentioned this
All new model macbook using Apple T2 chip will not have BIOS it's like iphone
The 4mb file you see is just non-BIOS information.

and remember this don't let me repeat
i don't know why but 4mb is not BIOS so don't care about it
 

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